Work Contacts keeps your work related contacts separated from your beloved, personal ones.
So you can easily search for your personal contacts more easily, AND you can search for work related ones more easily at the same time.

This app stores contacts information in its own database, so they do not appear on your phone's contacts application.

Don't worry. It will search for your saved work contacts and show you a pop-up windows once a known work-related contact is calling you.

You can move around the pop-up window to suit you. It will open at the position it was last moved to.

Give a break to your personal life.
Enjoy.